/* 
selector {
   atributo1: valorAtributo1;
   atributo2: valorAtributo2;
   atributo3: valorAtributo3;
}
*/
body{
    background-image: url(../img/fondo.jpg);
    background-size: cover;
}
.container{
  /*border: 1px red solid;*/
  width: 300px;
}